Motor.



F. MILLER.

MOTOR APPLIOATION FILED JULY 29,1913.

Patented July 14, 19111 2 SHEETS-SHEET l.

Pfam z 5 @l mcg.

r. Norms PETER: co., wAsmNcnw\ fr F. MILLER. MOTOR.

APPLICATION FILED JULY 29, 1913.

Patented July 14, 1914.

2 SHEETSSHEET 2. i1

'Inl/enfui Fl'dhz Millar,

Witter-:rey

. of two annularcosaxi plating edge, the pistons ,4,42

ttor, of which The object of ".Fig. 5 illustrates a UNirED STATES PATENT OFFICE.

FRANZ MILLER, MILAN, ITALY.

MOTOR.

Specification of Letters Patent.

Application filed July 29,

Patented July 14, 1914.

1913. Serial No. 781,720.

VTo all whom it may concern Be itlr'nown that I, FRANZ MILLER, a subject of the King of Italy, Italy, have invented a new the following is cylinder motors, especially explosion motors,

with cylinders arranged opposite to one an other, in 'which' the conversion of the reciprocating motion to rotary motion is efof an undulatingv cam onf ected by' the aid which the thrust of each piston is exerted.

special type' of lsite rolling surfaces of the opposite pistons'.

andv recede ffrom each V Thus the motor is balanced and, inthe case approach each' other the volume and the weight ofthe motor can"A 'be reduced'I to a `minimum because the pro-'g jection's of the central cam member-can pene-z trate into the cavities of the two cylinders.' The accompanying' drawings illustrate by;

'v'vay ofv example several forms of a motor;

`cons'tructed in accordance wlth thepr'esentE invention.

' 1 Figuresland' 2 are two'axial sectionsat right angles toieach other ofone form.' Fig.. 34 is ,acrossse'ction on' line :r--w of 2;- `Fig. 4v is'an axial section of another form; modification lof the means for obtaining the rotation ot themov @tor shaft from the reciprocating movement V,ofthe piston, and Fig. A6 illustrates still an#l other form of construction. As will be lseen 40l from these illustrations, two annular cylinders 5, 5 coaxial with the shaft 1 are arranged one opposite the other, and between them is mounted,rigid with said shaft 1, a :am plate or rail 1 with an unduof which plate two opposite acesare intended to receive the thrustof The undul'tions of the'cam' plate or rail 1 may beef any, equal number, and inorder that` the motormaybe balanced, the oppospistons must approach eachother land recede frome'ach other simultaneously. Con sequently the points where the action ofthe .pistons isapplied on the undulatedcam will iii/this case haveja displacement from each 4otherVof 'an-angle corresponding to theha'lf= of acompletenndulation residing in Milan, and useful Mo-v a specification.- The present invention relates to multi-' In the construction illustrated in Figs. 1-3, the pistons 4, 4 each carry rollers 2, 2 at an angle of 90 degrees from each other, bearing against the central cam 1 which has two complete undulations. The cylinders 5,5 in which the pistons slide, form the laid of the tubular support 6. The pistons 4, 4 have projections 7 engaging in a groove 8 provided in the outer circumference of the cam 1 for the purpose of maintaining the i pistons always the 'Y present invention is af' motor in which. the oppo, As itely arranged pistons act on the two oppothecam serving toi .transformtlie movement in such away-'that other sim'ultaneously.l-

al cylinders being used;V

itself while the thrust of the pistons 4, 4 is appliedto the cam 1 .by means of the rollers 2, 2. Ihespindles of these rollers are prolongedto` form projections 9v penetrating such a manner that the pistons are carried around byI the'cylinders 5, when revolving. The gas mixture or in general the motive iui'd Aon passing through the hollow shaft 1,

vcylinders and the cam 1, .and thence passes into the cylinders through inlets12 provided in the vwall of the shaft 1 which are' 'opened inders 5, 5. l

In a two-cycle engine the mixture is introduced into the chamber during the stroke ofthepistons in which the vrecede'from eachother. During the fo lowing stroke Acompression of the mixture is caused in such a manner that the inlets 12 which make com- `munication between the chamber and the cylinders are scarcely` open, when the mixture penetrates into these latter, exhaust openings 13 have been opened and the gases of the precedingexplosion have been discharged. On account of the ,momentum acquired, the system continues to 'and give'an impulse to thewhole system,

revolve after the completion of the working"v l while on account of momentum thesaid casing which may revolve on shaft 1 'by the inconnection with theA plate 1 into longitudinal grooves 10 in the casing inenters the chamber formed between the'twof '1 and closed by .a sleeve 11 rigid with the cyl- I .the vSpace between them is diminished and afiy after thej' 'i after having closed suc-'55 40, and approaching toward each other "simul-V only in that the cam 1 has four undulations to form a four cycle motor with a speed equal to that of the motor sho-Wn in Figs. 1 and 2 or a two-cycle motor having half the speed. In these figures are also shown the details of construction.

It is obvious that the motor could, in any case, be so constructed as to form a fourstroke-cycle motor, by arranging the admis sion and the discharge in the known manner.

In the construction shown in Fig. 5, each of the pistons 4, 4 has, on the edge facing the cam 1, a similar undulating cam 16, in- .tended to come into contact with the cam l by the intermediary of rolling members such as balls 17, mounted in any suitable manner 0n the two opposite faces o f the cam 1. 1n the illustration is shown the posit-ion of the pistons after the working stroke vand it will be seen that the undulations of the two opposite, pistons are arranged at an angle of 4 50 to each o.th er, thus compelling the pistons to recede and approach each other at the same time, being carried with thecasing when rotating by means, o f t e rollers 9 arranged to slide in the longitudinal grooves 10C.

1n the construction shown in Fig. 6, the pistons have again o n their Opposing edges an undulating cam 16 but the central camis replaced by a cross member l2 rigid with the shaft 1 and carrying the pairs O rollers 18 arrangd to come incontact with the proaeaed which in Ithis case must 'haye equally Lrvranged. undlvil-ations, as sliown in the illustration to allow of lthepistons receding from taneously, in accordance with the action described above. '.lhe carrying around of the pistons bythe casing is effected also in this case by the aid Vof rollers 9 sliding in grooves l0. l

t is evident that since the pistons are held to the casing in such a manner as to be able to move .lo'ngi'tud inallyl iwith respect to the .same without being able to turn, the

casing .will 'turn the central cam is fixed,

Whereas if the casing iS made immovable' the Ashaft 1 lwil l turn.

,tl- 1e central cam member and consequently The ignition. can be. f'ted. by the aid 0f any number, of vsparking plugs mounted in the. end. of the cylinders .and suitably. 00nnected to a common. lead 14 4;) connect 'editoha distributor :of ordinary type.

The, prel@ 0i .the Cam 1 01? the edges 0f the :pistons must be calculated according to the laws of. expansion lef. thelga's, and. the

number as-well as the f Qm of the `undula .tions will@ ma' hetype 0f th mote? and of the desired speed.

ges or cams ofthe two pistons 4:, 41

. adapted for connection to `a source ImotVe-fluid. Supply, Said.' y1derS..-aad shaft constituting companion parts, oneof which @namens compaia The arrangement by which the two pistons or Vthe two opposing series of pistons exert their thrust on the two opposing sides of a common intermediate cam member permits of a balance motor being obtained having the smallest possible volume and'weight in consequence ofthe complete utilization of the resistance of the members employed and I of the space.

` the inlet ports in said cylinders during the movement of the said revoluble part; a piston reciprocating in each. cylinder; and v means cooperating lwith said pistons t o c onvert their reciprocatory movement intoroand recede. from each other, simultaneously. 2- In a meter, the Combination Qta-ralf of opposed cylinders connected togethx'erMto vtary movement of said revolublepart to cause said pistons to approach' toward form the lcasingof the motor andlprovidied with inlet and outlet ports.; aliollw shaft,

whereonsaid cylinders are mounted congentric with each other and with" shaft,

is fixed and the other reyoluble, and"'s aid shaft having lports for 'communication with the inlet ports in said cylinders during the movement of the revolublepart; a piston reciprocating in 'each cylinder; a member located between said pistqns and proyided with a plurality of'undul ing camSuraCeS;

and rollers connected with 'said .pistons ar-V ranged to bearagainst said camsurfaces, toL

convert the reciprocating movement of the pistons into Vrotary movement of saidA revoluble. part and t@ Cause .Sld PStQS t0. ap-

proach toward and recede from each othen; Y

simultaneously. i .3. In a motor., .the Combinati@ fof .'Pr of opposed cylinders Iconnected "to'ether lto orm the casing of the mfotor and provided with inlet and outlet sans., a

hollow whereon said cylinders'are mounted oncn .tric with each other .and with tlills'lift,

adapt/d f 'r connection to@ sassisarah the inlet ports in the c linders during the movement of the revolu le part; a member fixed to said shaft for controlling the open ing and closing of said inlet ports; a piston reciprocating in each cylinder; means for preventing rotation of said pistons relative to said cylinders; and means coperating with said pistons to convert their reciprocation into rotary movement of said revoluble part and to cause said pistons to approach toward and recede from each other simultaneously.

4. In a motor, the combination of opposed cylinders provided with inlet and outlet ports; a shaft around which the cylinders are mounted, said cylinders and shaft constituting companion parts one of which is fiXed and the other revoluble; a piston reciprocating in each cylinder; and means to convert the reciprooatory movement of said pistons into rotary movement of said revov luble part and to cause said pistons to approach toward and recede from each other simultaneously, said pistons coperating independentlyy with such means at opposite sides thereof.

5. In a motor, the combination of a pair of opposed cylinders; a shaft around which said cylinders are mounted concentrically with each other and with the shaft, said cylinders and shaft constituting companion parts, one of Which is fixed and the other revoluble; a piston reciprocating in each cylinder; and a cam rail interposed between said pistons and with which the latter cooperate independently, to convert the reciprocatory movement of the pistons into rotary movement of said revoluble part and to cause said pistons to approach toward and recede from each other simultaneously.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

ING. FRANZ MILLER.

Witnesses:

EUoLE BARE, J r., P. EUPOPE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

